too horrible for the shitty alg

console-api/src/update/update.service.ts

@@ -97,19 +97,13 @@ export class UpdateService extends ConsoleLogger {
     };
   }
 
+  /*
   private getPartArchiveSubset(
     requestedFiles: string[],
     allArchives: Archive[],
     currentSize = 0,
     currentBestSolutionValue = Infinity
   ): [Archive[], number] {
-    /*
-    this.log(
-      `requested: ${requestedFiles.join(',')} remaining: ${allArchives
-        .map((a) => `${a.size}:${a.files.join(',')}`)
-        .join('|')} currentSize: ${currentSize} currentBestSolutionValue: ${currentBestSolutionValue}`
-    );
-     */
     if (!requestedFiles.length) {
       return [[], currentSize];
     }
@@ -132,6 +126,13 @@ export class UpdateService extends ConsoleLogger {
     }
     return bestSolution;
   }
+   */
+
+  private getCostOfArchives(archives: Archive[]) {
+    const requestCost = archives.length * (0.05 / 10000);
+    const trafficCost = _.sumBy(archives, (a) => a.size) * (0.24 / 1024 ** 3);
+    return trafficCost + requestCost;
+  }
 
   async getPartPackageMetalink(id: string, depotDto: DepotDto, version: string, requestedFiles: string[]) {
     const tryExactArchives = await this.getArchives(
@@ -152,15 +153,17 @@ export class UpdateService extends ConsoleLogger {
         archives: tryExactArchives,
       };
     }
-    const allArchives = await this.getArchives(id, depotDto, version, (qb) =>
-      qb.andWhere(':requestedFiles && archive.files', { requestedFiles: requestedFiles }).orderBy('archive.size', 'ASC')
+    const allPartArchives = await this.getArchives(id, depotDto, version, (qb) =>
+      qb
+        .andWhere(':requestedFiles && archive.files', { requestedFiles: requestedFiles })
+        .andWhere('archive.role = :partRole', { partRole: ArchiveType.Part })
+    );
+    const [fullArchive] = await this.getArchives(id, depotDto, version, (qb) =>
+      qb.andWhere('archive.role = :fullRole', { fullRole: ArchiveType.Full })
     );
-    /*for (const archive of allArchives) {
-      archive.files = _.intersection(archive.files, requestedFiles);
-    }*/
-    const [archives] = this.getPartArchiveSubset(_.uniq(requestedFiles), allArchives);
-    if (!archives) {
-      throw new BlankReturnMessageDto(404, 'Some files of this build not found').toException();
+    let archives = allPartArchives;
+    if (fullArchive && this.getCostOfArchives([fullArchive]) <= this.getCostOfArchives(allPartArchives)) {
+      archives = [fullArchive];
     }
     return {
       cdnUrl: this.cdnUrl,